/*
* Licensed Materials - Property of Rogue Wave Software, Inc.
* © Copyright Rogue Wave Software, Inc. 2014, 2015
* © Copyright IBM Corp. 2009, 2014
* © Copyright ILOG 1996, 2009
* All Rights Reserved.
*
* Note to U.S. Government Users Restricted Rights:
* The Software and Documentation were developed at private expense and
* are "Commercial Items" as that term is defined at 48 CFR 2.101,
* consisting of "Commercial Computer Software" and
* "Commercial Computer Software Documentation", as such terms are
* used in 48 CFR 12.212 or 48 CFR 227.7202-1 through 227.7202-4,
* as applicable.
*/
import ilog.views.IlvGrapher;
import ilog.views.IlvHandlesSelection;
import ilog.views.IlvManagerView;
import ilog.views.IlvTransformer;
import ilog.views.IlvPoint;
import ilog.views.interactor.IlvSelectInteractor;
import ilog.views.interactor.IlvZoomViewInteractor;
import ilog.views.swing.IlvJScrollManagerView;
import ilog.views.swing.IlvJManagerViewControlBar;
import ilog.views.graphlayout.IlvGraphLayout;
import ilog.views.graphlayout.IlvGraphLayoutReport;
import ilog.views.graphlayout.IlvGraphLayoutException;
import ilog.views.graphlayout.IlvGrapherAdapter;
import ilog.views.graphlayout.GraphLayoutEvent;
import ilog.views.graphlayout.GraphLayoutEventListener;
import ilog.views.graphlayout.random.IlvRandomLayout;
import ilog.views.graphlayout.topologicalmesh.IlvTopologicalMeshLayout;
import ilog.views.util.IlvProductUtil;
import ilog.views.util.IlvResourceUtil;
import ilog.views.util.IlvLocaleUtil;
import ilog.views.util.swing.IlvSwingUtil;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.net.*;
import java.io.*;
import java.text.*;
/**
* This is a very simple applet/application that uses the
* <code>IlvGrapher</code> to perform a topological mesh layout.
* It shows how to use topological mesh layout in applications that are not
* based on CSS styling.
*/
public class TopologicalMeshLayoutApplet
extends JApplet
{
static {
// This applet is designed to run only with default resource bundle
// and various selected other resource bundles.
// Setting the available resource suffixes avoids that the applet
// tries to load resource bundles for other locales over the net,
// even if the current locale of the browser is different.
if (IlvResourceUtil.isInApplet())
IlvResourceUtil.setAvailableResourceSuffixes("", "_ja");
// Test code whether the demo works in RTL locales
// Locale newLocale = new Locale("he");
// IlvSwingUtil.setDefaultLocale(newLocale);
}
{
// This sample uses JViews Diagrammer features. When deploying an
// application that includes this code, you need to be in possession
// of a JViews Diagrammer Deployment license.
IlvProductUtil.DeploymentLicenseRequired(
IlvProductUtil.JViews_Diagrammer_Deployment);
}
/** The grapher */
IlvGrapher grapher = new IlvGrapher();
/** The view of the grapher */
IlvManagerView mgrview = new IlvManagerView(grapher, null);
/** An instance of the Topological Mesh Layout algorithm */
IlvTopologicalMeshLayout layout = new IlvTopologicalMeshLayout();
/** An instance of the Random Layout algorithm */
IlvRandomLayout randomLayout = new IlvRandomLayout();
/** A graph layout event listener */
LayoutIterationListener layoutListener = new LayoutIterationListener();
/** A text field to display messages */
JTextField msgLine = new JTextField();
/**
* Initializes the applet/application.
*/
public void init()
{
showMessage(getString("InitMessage"));
JPanel panel;
super.init();
// attach the grapher to the layout instances
IlvGrapherAdapter adapter = new IlvGrapherAdapter(grapher);
layout.attach(adapter);
randomLayout.attach(adapter);
// a few layout parameters
layout.setConnectLinksToNodeCenters(true);
layout.setMultiLinkMode(IlvTopologicalMeshLayout.NARROW_STRAIGHT_LINE_BUNDLE);
layout.setSelfLinkMode(IlvTopologicalMeshLayout.NARROW_CONNECTED_SQUARE);
layout.setSelfLinkRelativeAttachPosition(new IlvPoint(0.5f, 0.5f));
layout.setSelfLinkSpacing(-1);
// install the layout iteration listener on the layout instance
layout.addGraphLayoutEventListener(layoutListener);
// create the scroll manager view
IlvJScrollManagerView scrollManView = new IlvJScrollManagerView(mgrview);
// Some settings on the manager view and on the scroll manager view
mgrview.setAntialiasing(true);
mgrview.setKeepingAspectRatio(true);
mgrview.setBackground(Color.white);
mgrview.setForeground(SystemColor.windowText);
Color xc = SystemColor.windowText;
xc = new Color(255-xc.getRed(), 255-xc.getGreen(), 255-xc.getBlue());
mgrview.setDefaultXORColor(xc);
mgrview.setDefaultGhostColor(SystemColor.windowText);
mgrview.setZoomFactorRange(0.02, 10.0);
// Settings parameters for selection handles
IlvHandlesSelection.defaultHandleColor = Color.black;
IlvHandlesSelection.defaultHandleBackgroundColor = Color.white;
IlvHandlesSelection.defaultHandleShape = IlvHandlesSelection.SQUARE_SHAPE;
// set the layout manager
getContentPane().setLayout(new BorderLayout(0,0));
// fit so far all together
getContentPane().add("Center", scrollManView);
getContentPane().add("North", panel = new JPanel());
panel.setLayout(new FlowLayout(FlowLayout.LEADING));
// create the standard control bar
IlvJManagerViewControlBar controlBar = new IlvJManagerViewControlBar();
controlBar.setView(mgrview);
panel.add(controlBar);
// modify the interactors such that the demo looks better
((IlvSelectInteractor)controlBar.getSelectInteractor()).setOpaqueMove(true);
((IlvZoomViewInteractor)controlBar.getZoomViewInteractor()).setPermanent(true);
// set the initial interactor
mgrview.setInteractor(controlBar.getSelectInteractor());
// create the graph selector
JComboBox chooser;
panel.add(new JLabel(getString("fileChooser.Label")));
panel.add(chooser = new JComboBox());
chooser.addItem("small");
chooser.addItem("medium");
chooser.addItem("large");
chooser.setToolTipText(getString("fileChooser.Tooltip"));
chooser.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
JComboBox comboBox = (JComboBox)event.getSource();
String fileName = (String)comboBox.getSelectedItem();
loadGrapher(fileName);
}
});
// create the panel on bottom
JPanel bottomPanel = new JPanel();
bottomPanel.setLayout(new BorderLayout());
getContentPane().add("South", bottomPanel);
// create the layout buttons
JButton b;
JPanel layoutPanel = new JPanel();
bottomPanel.add("North", layoutPanel);
layoutPanel.add(b = new JButton(getString("RandomizeButton.Label")));
b.setToolTipText(getString("RandomizeButton.Tooltip"));
b.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
layout(randomLayout, grapher);
}});
layoutPanel.add(b = new JButton(getString("LayoutButton.Label")));
b.setToolTipText(getString("LayoutButton.Tooltip"));
b.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
layout(layout, grapher);
}});
// add the message line to the bottom panel
bottomPanel.add("Center", msgLine);
msgLine.setEditable(false);
// set the component orientation according to the locale
Locale loc = IlvSwingUtil.getDefaultLocale();
ComponentOrientation co = ComponentOrientation.getOrientation(loc);
getContentPane().applyComponentOrientation(co);
// load a sample grapher
loadGrapher("small");
}
/**
* Called when this applet is being reclaimed in order to destroy
* any resources that it has allocated.
*/
public void destroy()
{
super.destroy();
// This method is intended to workaround memory management issues
// in the Sun JRE. Please refer to the method documentation for more
// details and a description of the known issues.
IlvSwingUtil.cleanupApplet();
}
/**
* Allows you to run the demo as a standalone application.
*/
public static void main(String[] arg)
{
// Sun recommends that to put the entire GUI initialization into the
// AWT thread
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
TopologicalMeshLayoutApplet applet = new TopologicalMeshLayoutApplet();
applet.init();
JFrame frame = new JFrame(getString("Frame.Label"));
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(600, 600);
frame.getContentPane().add(applet);
frame.setVisible(true);
}
});
}
/**
* Load a sample IVL file.
* @param fileNameBase The base of the filename, excluding the path prefix
* and the extension suffix.
*/
private void loadGrapher(String fileNameBase)
{
try {
showMessage(getString("FileReadingStartMessage"), fileNameBase);
grapher.deleteAll(false);
try {
grapher.read(
IlvSwingUtil.getRelativeURL(this, "data/" + fileNameBase + ".ivl"));
} catch (Exception ex1) {
// This case occurs only when we pack the entire application into
// one jar including the data files, and start as application
grapher.read(getClass().getResource("data/" + fileNameBase + ".ivl"));
}
if (fileNameBase.startsWith("large")) {
layout.setMultiLinkMode(IlvTopologicalMeshLayout.FREE_ONE_BEND_BUNDLE);
layout.setMultiLinkOffset(20);
layout.setMultiLinkMaxSpread(100);
layout.setSelfLinkMode(IlvTopologicalMeshLayout.NARROW_CONNECTED_RECTANGULAR);
layout.setSelfLinkAllowedCorners(IlvTopologicalMeshLayout.TOP_LEFT);
layout.setSelfLinkSpacing(10);
} else {
layout.setMultiLinkMode(IlvTopologicalMeshLayout.NARROW_STRAIGHT_LINE_BUNDLE);
layout.setMultiLinkOffset(10);
layout.setMultiLinkMaxSpread(50);
layout.setSelfLinkMode(IlvTopologicalMeshLayout.NARROW_CONNECTED_SQUARE);
layout.setSelfLinkAllowedCorners(IlvTopologicalMeshLayout.TOP_LEFT |
IlvTopologicalMeshLayout.BOTTOM_RIGHT);
layout.setSelfLinkSpacing(-1);
}
// the transformer may have been modified, so
// we set the identity transformer
mgrview.setTransformer(new IlvTransformer());
grapher.reDraw();
showMessage(getString("FileReadingDoneMessage"), fileNameBase);
} catch (Exception e) {
// e.printStackTrace();
showMessage(e.getMessage());
}
}
/**
* Performs the layout of the graph.
*/
private void layout(IlvGraphLayout layout, IlvGrapher grapher)
{
showMessage(getString("LayoutStartMessage"));
// initialize the iteration listener
layoutListener.initialize();
try {
// perform the layout and get the layout report
IlvGraphLayoutReport layoutReport = layout.performLayout(false, true);
// print the code from the layout report
showMessage(getString("LayoutDoneMessage"),
layoutReport.codeToString(layoutReport.getCode(),
IlvLocaleUtil.getCurrentULocale()));
}
catch (IlvGraphLayoutException e) {
// e.printStackTrace();
showMessage(e.getMessage());
}
}
/**
* Displays a message.
*/
void showMessage(String message)
{
// the message is displayed in the message line
msgLine.setText(message);
msgLine.paintImmediately(0, 0, msgLine.getWidth(), msgLine.getHeight());
}
void showMessage(String msgformat, Object val)
{
Object[] args = { val };
showMessage(MessageFormat.format(msgformat, args));
}
/**
* Returns a string.
*/
static String getString(String key)
{
return IlvResourceUtil.getString(key, TopologicalMeshLayoutApplet.class,
IlvLocaleUtil.getCurrentLocale());
}
// -------------------------------------------------------------------------
/**
* A graph layout iteration listener. Implementing the interface
* GraphLayoutEventListener gives you the possibility to receive
* during the layout information about the behavior of the layout
* algorithm. This information is contained in the graph layout event.
*
* In our case, we will simply print a dot each time the method
* layoutStepPerformed is called, that is after each iteration of
* the Bus Layout algorithm.
*/
class LayoutIterationListener
implements GraphLayoutEventListener
{
private String toShow = "";
private static final int MAX_LENGTH = 50;
/**
* This method is automatically called by the layout algorithm.
*/
public void layoutStepPerformed(GraphLayoutEvent event)
{
// the status area has a limited width, so we are forced to
// reinitialize the message string
if (toShow.length() > MAX_LENGTH)
toShow = "";
toShow += ".";
showMessage(toShow);
}
/**
* Initialize the listener by reseting the toShow variable.
* This method must be called before the layout is started.
*/
void initialize()
{
toShow = "";
}
}
}